JP2978722B2 - Farm work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work machine, and more particularly, to a work machine for performing a ground work such as a tilling work and a scraping work.

[0002]

2. Description of the Related Art Conventionally, as an agricultural work machine for performing this type of soil work, for example, as described in Japanese Utility Model Laid-Open No. 2-12208, a machine frame provided with a transmission having an input shaft, Left and right working machines each having a rotary working body that is rotatably connected to the left and right portions of the machine frame in the horizontal direction by vertical connecting pins and that is driven to rotate by an output from the mission, and provided on the machine frame. A cylinder that horizontally displaces the left and right working machines with the left and right connecting pins as the center of rotation, and displaces them into a state in which they are extended to the left and right portions of the machine frame and a state in which they are projected parallel to the rear portion of the machine frame, respectively. A device, locking means for manual operation provided on the left and right portions of the machine frame to lock the left and right working machines protruding to the left and right portions of the machine frame, and projecting in parallel to the rear portion of the machine frame, respectively. Previous Structures and a removable support rod for manual operation for connecting supporting the left and right working machine is known.

[0003]

In the structure described in the above publication, the machine frame is connected to the three-point suspension mechanism of the tractor, the input shaft of the transmission is connected to the PTO shaft of the tractor, and the vehicle is mounted on the tractor. The operator remotely operates the cylinder device to displace the left and right working machines to the left and right portions of the machine frame, respectively, and to displace the left and right working machines in parallel to the rear portion of the machine frame, respectively. When the left and right working machines are displaced so as to extend to the left and right portions, it is necessary for the operator to step down from the tractor and manually operate the locking means to lock the left and right working machines respectively to the left and right portions of the machine frame.

Further, when displacing the left and right working machines so as to project parallel to each other at the rear portion of the machine frame, an operator descends from the tractor and manually operates locking means to unlock the left and right working machines. After that, the operator mounts the tractor again to remotely operate the cylinder device, and displaces the left and right working machines so as to project in parallel to the rear portion of the machine frame. Then, it is necessary for the operator to get off the tractor and manually operate the support rod, and connect and support the left and right working machines with the support rod.

Accordingly, each time the operator switches the tractor, the left and right working machines are displaced in a state where the left and right working machines are projected in parallel to the rear portion of the machine frame and the left and right working machines are respectively extended to the left and right portions of the machine frame. The left and right work machines must be locked and unlocked by manual operation after getting on and off from the vehicle, and the left and right work machines are folded back to the non-working state and the left and right work machines are extended in the left and right working state. There is a problem that a lot of trouble and labor are required for the switching operation for switching to the above.

In view of the above, the present invention has been made in view of the above-mentioned circumstances, and shows a state in which left and right working machines are respectively extended on left and right portions of a machine frame and a state in which the left and right working machines are respectively protruded parallel to a rear portion of the machine frame. The lock release means is automatically operated in conjunction with the operation of the cylinder device for displacing the right and left working machines, and can be securely locked in a state where each of the left and right working machines protrudes parallel to the rear of the machine frame. When horizontally rotating the left and right working machines, the left and right working machines can be securely unlocked prior to the horizontal rotating of the left and right working machines. It is easy to switch between the non-working state folded back and the working state protruding on the left and right sides of the machine frame, and this switching operation does not require special labor and labor, and an agricultural work machine with excellent operability is provided. With the purpose of providing Is shall.

[0007]

According to a first aspect of the present invention, there is provided an agricultural working machine comprising: a machine frame having a transmission having an input shaft; and a horizontal pivoting pin provided on left and right portions of the machine frame by vertically connecting pins. Left and right working machines having a rotary working body freely connected and rotationally driven by an output from the mission,
The left and right working machines are horizontally rotated about the left and right connection pins provided on the machine frame and are respectively extended to the left and right portions of the machine frame, and are respectively parallel to the rear portions of the machine frame. A cylinder device for displacing the left and right working machines in a rearward portion of the machine frame in a state in which each of the left and right working machines is displaced in a parallel protruding state. The left and right working machines are each locked to the rear end of the machine frame in conjunction with each other, and when the left and right working machines are horizontally rotated toward the left and right portions of the machine frame by the cylinder device, Lock release means for releasing the lock of the left and right working machines in conjunction with the operation of the cylinder device is provided.

According to a second aspect of the present invention, there is provided the agricultural working machine according to the first aspect of the present invention, wherein the unlocking means is rotatably supported in the vertical direction on the left and right sides of the rear end of the machine frame to perform the left and right working. Right and left lock fittings which are removably engaged with engaging projections protruding from the rear end of the machine, a connecting rod connecting the left and right lock fittings, and a rotatably pivoted support to the machine frame. A rotating plate that is rotated in conjunction with the operation of the cylinder device, and an interlocking piece that rotates the one lock fitting in the vertical direction in conjunction with the rotation of the rotating plate.

The agricultural working machine according to the third aspect of the present invention is the agricultural working machine according to the first or second aspect, wherein the cylinder device comprises:
Has a moving shaft for rotating the rotating plate unlocking means at the distal end of the advance and retreat of the piston rod, the moving shaft is what is engaged to be movable in the guide groove formed in the machine frame .

According to a fourth aspect of the present invention, there is provided the agricultural working machine according to any one of the first to third aspects, wherein the guide groove formed in the machine frame is rotated by a moving shaft of the cylinder device. A linear moving part in the front-rear direction for rotating the plate and engaging and disengaging the left and right locking fittings with the engaging projections of the left and right working machines via the interlocking piece, and a cylinder device formed in communication with the linear moving part. The moving shaft has a left-right arc-shaped moving portion for horizontally rotating the left and right working machines via an interlocking rod.

[0011]

In the agricultural working machine according to the first aspect of the present invention , the piston rod is advanced so that the cylinder device is extended by the operation of the cylinder device when the left and right working machines are not folded for transportation from the time of the work. Then, the left and right working machines are horizontally rotated rearward from the left and right portions of the machine frame around the respective left and right connecting pins as rotation centers, and the inner rear ends of the left and right working machines are rearward of the machine frame. By being in contact with the ends, the left and right working machines are displaced in a state in which the left and right working machines respectively project parallel to the rear portion of the machine frame.

The left and right working machines are respectively displaced in a state protruding parallel to the rear of the machine frame by the cylinder device, and unlocking means is interlocked with the operation of the cylinder device. The left and right working machines projecting parallel to the rear of the machine frame are automatically locked.

Therefore, the left and right working machines are greatly reduced in width in the left and right direction, folded for transportation from the time of work, and transformed into a state suitable for traveling on a road or storing in a hangar.

Next, at the time of tilling work,
As the cylinder device is retracted by operation of the cylinder device
When the piston rod is retracted , the lock release means is linked to the operation of the cylinder device, and the locks of the left and right working machines connected to the rear end of the machine frame are released by the lock release means.

In addition, the operation of the cylinder device causes the cylinder
When the piston rod is retracted so that the device contracts ,
The left and right working machines are horizontally rotated from the rear part of the machine frame to the front with the left and right connecting pins as the center of rotation, and the inner ends of the left and right working machines abut the left and right parts of the machine frame. As a result, the left and right working machines are displaced so as to project to the left and right portions of the machine frame, respectively. Then, the rotary working bodies of the left and right working machines are connected to the output shafts of the transmission in a state where the rotary working bodies are rotationally driven by the output from the transmission of the machine frame.

Therefore, when the left and right working machines are horizontally rotated about the respective connecting pins toward the left and right portions of the machine frame, the lock is released prior to the horizontal turning of the left and right working machines. The locks of the left and right working machines are automatically released by means.

For example, when the machine is towed from the tractor and the input shaft is rotated by the output from the power take-off shaft of the tractor, the output from the output shaft of the transmission causes the left and right working machines to rotate. The rotary working body is rotated and driven to advance, and the left and right rotary working bodies are sequentially cultivated and crushed with a wide working width that is greater than the vehicle width of the tractor and protrudes in the left-right direction.

In the agricultural working machine according to the second aspect of the present invention, when the piston rod is advanced and retracted so that the cylinder device expands and contracts by the operation of the cylinder device , the rotating plate is interlocked with the operation of the cylinder device. While being rotated about the shaft, the interlocking piece connected to the rotating plate is moved forward and backward. One of the lock fittings operated by the interlocking piece is rotated about the shaft, and the other lock fitting connected to the one lock fitting via the connecting rod is simultaneously rotated with the one lock fitting. Is turned around.

When the left and right working machines are displaced so as to project parallel to each other at the rear of the machine frame, the left and right working machines protruding from the rear ends of the left and right working machines. The left and right lock fittings respectively engage with the collision body, and the left and right working machines are locked by the left and right lock fittings. Also, when the left and right working machines are horizontally rotated toward the left and right portions of the machine frame, the left and right locking fittings are disengaged from the left and right engaging projections of the left and right working machines. The left and right working machines are unlocked.

According to the third aspect of the present invention, the moving shaft of the piston rod of the cylinder device is guided and moved by the guide groove formed in the machine frame, and the unlocking means is moved by the moving shaft of the piston rod. Are rotated in conjunction with each other. Therefore, the moving shaft of the piston rod is moved along the guide groove with good stability, and the turning plate is surely rotated by the moving shaft.

According to the fourth aspect of the present invention, the moving shaft of the piston rod of the cylinder device is moved along the linear moving portion of the guide groove, so that the left and right engaging projections of the left and right working machines are moved. On the other hand, the left and right lock fittings are disengaged, the left and right working machines are locked, and this lock is released.
Further, when the moving shaft of the piston rod of the cylinder device is moved along the arc-shaped moving portion of the guide groove, the left and right working machines are horizontally rotated via the interlocking rod.

Therefore, when the left and right working machines folded in the rear part of the machine frame and projecting in a parallel manner are horizontally rotated toward the left and right parts of the machine frame, the left and right working machines are rotated horizontally. Prior to this, the left and right working machines are unlocked.

[0023]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 denotes a machine frame. The machine frame 1 has a hollow cylindrical main frame 2 extending in the left-right direction. The main frame 2 is disposed in parallel at both ends of the main frame 2. The left and right hitch arms 3 in the form of plates in the front-rear direction are integrally fixed. A mission 4 is fixed to an intermediate portion of the main frame 2,
An input shaft 5 of the transmission 4 is rotatably projected forward, and an output shaft 6 of the transmission 4 is rotatably inserted into and supported by the main frame 2. Both end portions 6a protrude outward from both end portions of the main frame 2.

A top mast 7 is integrally formed at the upper end of the transmission 4 to protrude forward, and a top link of a tractor (not shown) is detachably attached to a front end of the top mast 7. A mounting shaft 8 is supported. Lower arms 9 are integrally formed at the front ends of the right and left hitch arms 3, respectively, and lower pins 10 for detachably attaching left and right lower links of a tractor (not shown) are provided at the front ends of the left and right lower arms 9. Is protruding. The top mast 7 and the left and right lower arms 9 are connected by stays (not shown).

Next, a columnar support 11 is integrally and vertically protruded outward and vertically in the vicinity of the front end of the right and left hitch arms 3, respectively. A tapered fitting protrusion 12 whose diameter is reduced toward the outside is formed at the outer end of the fitting protrusion 12. Also, a vertical mounting shaft 13 is integrally protruded from the left and right upper supports 11, respectively.
Are rotatably supported.

The left and right lock fittings 14 are formed in a substantially triangular shape, and an insertion hole 15 through which the mounting shaft 13 is rotatably inserted is formed at an intermediate portion thereof. Engagement recess 16 that engages with the lock pin
Are formed, and a vertical support shaft 17 is integrally protruded from the other end.

The two pawl clutches 19 of the left and right clutches 18 are fixed to both ends 6a of the output shaft 6, and the other pawl clutch 19 to be described later is removably engaged with the one pawl clutch 19. The other pawl clutch is attached to a working machine described later. One claw clutch 19 of the left and right clutches 18 has a plurality of clutch concave portions and a plurality of clutch convex portions.

Next, a lower base body 20 is horizontally and integrally fixed between the rear side parts of the right and left hitch arms 3, and a plurality of leg pieces 21 are provided on the left upper part of the lower base body 20. An upper base body 22 is placed in parallel and fixed integrally, and a bolt / nut 23 as a vertical axis of rotation is attached between the upper base body 22 and the lower base body 20. I have.

The lower base body 20 and the upper base body 22 are respectively formed with guide grooves 24 having the same shape vertically facing each other. The upper and lower guide grooves 24 have an arc-shaped moving part 25 in the left-right direction. The right end of the arc-shaped moving part 25 has a right-handed linear moving part 26 in the front-rear direction slightly inclined toward the right outside front. Is formed at the left end of the arc-shaped moving part 25, and a left-handed linear moving part 27 in the front-rear direction slightly inclined toward the left outside front is formed. Then, the guide grooves 24 of the same shape facing the upper and lower sides
Is formed substantially in a W shape in plan view by the arc-shaped moving portion 25 and the left and right linear moving portions 26 and 27 of the arc-shaped moving portion 25.

The bolt and nut 23 are located between the lower base body 20 and the upper base body 22.
A pair of upper and lower interlocking plates 28 formed in the same shape are rotatably supported by 23a. This pair of upper and lower interlocking plates
28 are each formed in a substantially rhombic shape, an insertion hole 29 through which the bolt 23a is inserted is formed at one end in the length direction, and the other end is elongated toward the insertion hole 29, and Guide long grooves 30 corresponding to the lengths of the right and left linear moving portions 26 and 27 are formed, respectively.

The guide slot 30 communicates with the left and right linear moving portions 26 and 27. When a later-described moving shaft is moved in the guide slot 30, the left and right locks are moved. The metal fitting 14 is rotated about the mounting shaft 13.

A vertical mounting shaft 31 is positioned between the insertion hole 29 and the guide slot 30 and between the left and right sides of the upper and lower interlocking plates 28. The inner ends of the left and right interlocking rods 32 are rotatably supported on the shaft 31, respectively, and a connecting body 33 is screwed to the outer end of the left and right interlocking rods 32 so as to be able to advance and retreat. The connecting body 33 protrudes outward from the right and left hitch arms 3.

Further, a bracket 34 is integrally fixed to the rear side of the right hitch arm 3 among the right and left hitch arms 3, and a vertical mounting shaft 35 is attached to the bracket 34.
The cylinder device 36 is rotatably mounted on the shaft so that the cylinder device 36 expands and contracts by the operation of the cylinder device 36.
At the tip of a piston rod 37 which advances and retreats, a bearing body 38 serving as a spacer disposed between the upper and lower interlocking plates 28 is integrally formed, and a vertical moving shaft 39 is inserted into and supported by the bearing body 38. Have been.

The upper portion of the moving shaft 39 is provided in the guide groove 30 of the upper interlocking plate 28 and the guide groove of the upper base body 22.
A nut 41 is screwed through a washer 40 at the upper end of the upper base body 22 to a threaded portion 39a at the upper end of the moving shaft 39. The lower portion of the moving shaft 39 is movably inserted into the guide groove 24 of the lower base body 20. At the lower end of the moving shaft 39, an engaging shaft portion 42 is integrally provided so as to protrude in the axial direction.
Reference numeral 42 projects below the lower base body 20.

Next, a bolt as the rotation center shaft
The lower base body 20 is located near the lower end of the nut 23.
A support shaft 43 as a rotation center shaft is integrally and vertically protruded downward, and a rotation plate 44 is rotatably supported on the support shaft 43. A nut 46 is screwed via a washer 45 to the screw shaft portion at the lower end of the support shaft 43 which is located below.

The rotary plate 44 is formed in a substantially L-shape in plan view, and an insertion hole 47 through which the support shaft 43 is inserted is formed at an intermediate portion thereof. An engagement recess 48 with which the joint shaft 42 is detachably engaged is formed. An inner end of the right connecting rod 50 is rotatably mounted on a support shaft 49 near one end of the rotating plate 44, and an outer end of the right connecting rod 50 is It is rotatably mounted on a support shaft 17 of the right lock fitting 14.

An inner end of a left connecting rod 52 is rotatably mounted on the other end of the rotating plate 44 by a support shaft 51. The end is rotatably mounted on the support shaft 17 of the left lock fitting 14. In the guide groove 24 of the lower base body 20, a portion near the rear end of the right-side linear moving portion 26, that is, the right-side linear moving portion
The lower end of the lower base body 20 is located in the vicinity of the rear end of a continuous portion between the rear end of 26 and the right end of the arc-shaped moving portion 25.
A stopper 53 with which the outer portion of the engagement recess 48 of the 44 abuts is integrally provided to protrude downward.

Further, a coil spring 54 is stretched between the other end of the rotating plate 44 and the lower base body 20,
The rotation plate 44 is rotated by the coil spring 54
And the outer side of the engagement recess 48 is urged to abut the stopper 53.

The moving shaft 39 of the cylinder device 36
When the guide shaft 24 is guided by the linear moving portion 26 on the right side of the guide groove 24 and is moved in the front-rear direction, the engaging shaft portion 42 at the lower end of the moving shaft 39 is engaged with the engaging concave portion of the rotating plate 44. While being engaged in 48, the rotating plate 44 is rotated in conjunction with it, and this moving shaft 39 moves from the rear end of the right-side linear moving portion 26 to the arc-shaped moving portion 25,
The engaging shaft portion 42 of the moving shaft 39 is engaged with the engaging concave portion 48 of the rotating plate 44.
It comes out of the.

Further, the engaging shaft 42 of the moving shaft 39 is
The outer side of the engaging recess 48 of the rotary plate 44 is supported by the stopper 53 by the coil spring 54 while being disengaged from the engaging recess 48 of the 44. When the moving shaft 39 moves from the arc-shaped moving portion 25 of the guide groove 24 to the right-side linear moving portion 26 in the engaging concave portion 48 of the rotating plate 44, the engaging shaft portion 42 is engaged. The rotation plate 44 is rotated in association with the engagement shaft portion 42.

The left and right lock fittings 14 having the engaging recesses 16, the left and right connecting rods 50, 52 for rotating the left and right locking fittings 14, and the turning for moving the left and right connecting rods 50, 52 forward and backward. The plate 44, the rotating plate 44 disengaged from the engagement recess 48 of the rotating plate 44
When a left and right working machine, which will be described later, is protruded to the left and right portions of the machine frame 1 by a cylinder device 36 having a moving shaft 39 for interlocking rotation of the cylinder device 36 and a guide groove 24 for guiding the movement of the moving shaft 39 of the cylinder device 36. A lock release means 55 in the working state for locking the left and right working machines and unlocking the left and right working machines is configured.

Next, on the outer side of the rear end of the left and right hitch arms 3, upper and lower connecting pieces 56 are protruded horizontally and integrally with each other. A vertical connection pin 57 is located behind the center of the clutch 18 so that it can be inserted and removed. In addition, a guide projection 59 having a guide surface 58 inclined rearward and downward on the upper surface is integrally protruded rearward below the rear ends of the right and left hitch arms 3.

Left and right lock members 61 are rotatably supported in the rear end inner portions of the right and left hitch arms 3 by a left and right support shaft 60 so as to be vertically rotatable. Are connected by a horizontal connecting rod 62 arranged horizontally. When the one lock member 61 is rotated about the support shaft 60, the other lock member 61 is simultaneously rotated about the support shaft 60 via the connecting rod 62. ing.

The left and right lock fittings 61 are formed in a substantially triangular shape, and a corner located at a lower portion thereof is rotatably supported by the support shaft 60 and a corner located at a rear portion thereof. Are formed as lock portions 63 protruding and retracting on the guide projections 59 projecting from the lower rear ends of the left and right hitch arms 3, and corner portions located at the front portions thereof are formed as connection portions 64. .

The connecting portion 64 of the left lock member 61
The rear end of the interlocking piece 65 is rotatably connected to a left-right support shaft 66, and a rotary plate 67 is rotatably connected to the front end of the interlocking piece 65 with a vertical support shaft 68. The rotating plate 67 is located at the lower left side of the lower base body 20 and is connected to the lower base body 20.
Is rotatably supported by a support shaft 69 serving as a vertical rotation center axis.

The rotating plate 67 is formed in a substantially horizontally elongated rectangular shape, and an intermediate portion thereof is rotatably supported by a support shaft 69 serving as the rotation center axis, and an outer end portion thereof is formed by the support shaft. At 68, it is rotatably connected to the front end of the interlocking piece 65. At the inner end of the rotating plate 67, an engaging recess 70 is formed in which the engaging shaft 42 of the moving shaft 39 is detachably engaged.

In the guide groove 24 of the lower base body 20, the support shaft 69 is formed at the outer side of the linear moving portion 27 on the left side.
The rotation plate is located in front of the lower base body 20 at a lower portion thereof.
A stopper 71 with which the front side of 67 abuts is integrally protruded downward. Further, a coil spring 72 is stretched between the inner end of the rotating plate 67 and the lower base body 20, and the rotating plate 67 is rotated around the support shaft 69 by the coil spring 72. The rotation plate 67 is urged so that the front side of the rotation plate 67 comes into contact with the stopper 71.

The moving shaft 39 of the cylinder device 36
Is moved in the front-rear direction by being guided by the linear moving portion 27 on the left side of the guide groove 24, the engaging shaft portion 42 at the lower end of the moving shaft 39 is engaged with the engaging concave portion of the rotary plate 67. The rotating shaft 67 is rotated in conjunction with the inside of 70, and the moving shaft 39 moves from the rear end of the left-side linear moving portion 27 to the arc-shaped moving portion 25,
The engaging shaft portion 42 of the moving shaft 39 is
It comes out of the.

The engaging shaft 42 of the moving shaft 39 is connected to the rotating plate.
The front side of the rotating plate 67 is supported by the stopper 71 by the coil spring 72 while being disengaged from the engaging recess 70 of the 67. When the moving shaft 39 moves from the arc-shaped moving portion 25 of the guide groove 24 to the linear moving portion 27 on the left side, the engaging shaft portion 42 is engaged with the engaging concave portion 70 of the rotating plate 67. The rotation plate 67 is rotated in association with the engagement shaft 42.

The left and right lock members 61 having the lock portions 63, a connecting rod 62 for rotating the left and right lock members 61, an interlocking piece 65 for interlocking the one lock member 61, and a reciprocating piece 65 A rotating plate 67 for moving the rotating plate 67, and a moving shaft 39 for rotating the rotating plate 67 engaged with and disengaged from the engaging recess 70 of the rotating plate 67.
When the left and right working machines, which will be described later, are projected in parallel to the rear part of the machine frame 1 by the guide groove 24 for guiding the movement of the cylinder shaft 36 of the cylinder device 36 and the moving shaft 39 of the cylinder device 36, the left and right work Non-working state lock releasing means 73 for locking the engaging projections of the machine and unlocking the locking projections of the left and right working machines is configured.

Next, reference numeral 74 denotes left and right working machines disposed on the left and right portions of the machine frame 1. The left and right working machines 74 are disposed on the same axis as the main frame 2 in the left and right direction. The connecting frame 75 has a hollow pipe shape, and a front-back support arm 76 facing the hitch arm 3 of the machine frame 1 is fixed to an inner end of the connecting frame 75. The upper end of the chain case 77 is fixed to the outer end.

A drive shaft 78 is rotatably inserted and supported in the left and right connection frames 74 by bearings (not shown). One end of the drive shaft 78 projects inward from the support arm 76. The other end of the drive shaft 78 projects into the upper part of the chain case 77.

Further, a protruding shaft portion 78 at one end of the drive shaft 78 is provided.
a is spline-fitted so that the other pawl clutch 79 of the clutch 18 is slidable in the axial direction and fixed in the direction around the axis.
It is supported at the end of a. The inner end of the other pawl clutch 79 has the one pawl clutch
A plurality of clutch recesses and clutch pawls are formed respectively so as to be disengageably engaged with the plurality of clutch recesses and clutch pawls of the eighteenth embodiment. A coil spring 80 for urging the other pawl clutch 79 toward the end of the protruding shaft portion 78a is wound around the protruding shaft portion 78a of the drive shaft 78.

The support frames for the left and right working machines 74
At the inner end of 76, the upper and lower supports of the machine frame 1
The left and right engaging members 83 are located on the same axis line as 11 respectively.
At the inner ends of the upper and lower engaging members 83, fitting recesses 84 which are removably fitted to the fitting projections 12 of the upper and lower supports 11 are respectively provided. It is formed in a tapered shape whose diameter decreases toward the body 11.

Up and down lock pins 85 are integrally formed on the upper part of the engaging body 83 located above the left and right working machines 74, respectively. The engagement recesses 16 of the left and right lock fittings 14 of the unlocking means 55 in the working state are disengaged with the engagement recesses 84 of the left and right engagement bodies 83 fitted into the engagement protrusions 12 of the body 11 respectively. It is adapted to be freely engaged.

Further, mounting pieces 86 are vertically and integrally protruded from the inside of the rear ends of the support frames 76 of the left and right working machines 74 so as to face each other. Are rotatably supported in the horizontal direction by the connection pins 57 supported between the upper and lower connection pieces 56.

Further, of the mounting pieces 86 located above the left and right working machines 74, a connecting projection 87 is projected from the inner end rear of the mounting piece 86 of the right working machine 74. The outer end of the right-hand interlocking rod 32 is rotatably connected to a mounting piece 86 at a position near the portion 87 by an up-down interlocking shaft 88. Also, a connecting projection is provided at the front end of the inner end of the mounting piece 86 of the
The connecting projection 89 is provided on the left interlocking rod 32.
Are rotatably connected by a vertical interlocking shaft 90.

When the left and right interlocking rods 32 are moved forward and backward, the left and right working machines 74 project horizontally on the left and right portions of the machine frame 1 around the left and right connecting pins 57 as the center of rotation. And is displaced in a state of being protruded in parallel with the rear part of the machine casing 1.

Further, at the rear end of the support frame 76 of the left and right working machines 74, plate-shaped engaging projections 91 are integrally provided to project rearward. A guide edge 92 guided by the guide surface 58 of the guide protrusion 59 is formed on the side. Further, a locking fitting groove 93 into which the lock portions 63 of the left and right lock fittings 61 of the lock release means 73 are removably fitted is formed at the upper part of the left and right engaging projections 91.

The connecting frame of the left and right working machines 74
A connecting plate 81 is integrally protruded rearward at a substantially middle portion in the left-right direction of 75, and a hollow square pipe shape is provided between the rear end of the connecting plate 81 and the rear end of the support frame 76. Are integrally connected horizontally.

The support arms 76 of the left and right working machines 74
A cover body 95 is integrally fixed to the lower end of the chain case 77 and a substantially middle portion in the vertical direction of the chain case 77, and the inner end of the cover body 95 is formed to protrude toward the lower part of the machine casing 1. A rotary work body is provided between a side plate integrated with the inner end of the cover body 95 and a lower end of the chain case 77.
96 is rotatably mounted on the shaft.

The rotary working bodies 96 of the left and right working machines 74
Has a left-right rotating shaft rotatably mounted between a side plate at an inner end of the cover body 95 and a lower end of the chain case 77, and is provided on an axially circumferential side portion of the rotating shaft. Has a large number of tilling claws projected radially at predetermined intervals. The upper portions of the left and right rotary working bodies 96 are covered with the cover bodies 95, respectively. The left and right rotary working bodies 96 are rotatably connected to the left and right drive shafts 78 via a linking medium including a chain provided in the chain case 77, respectively.

Further, at the rear ends of the left and right cover bodies 95, grounding bodies (not shown) are respectively connected via a rubber plate so as to be freely displaceable in the vertical direction.
97 each. Adjustment mechanisms 98 are provided on the mounting frames 94 of the left and right working machines 74, respectively.
Are supported so as to be adjustable in the vertical direction, and the right and left terrain bodies are supported by the left and right suspension mechanisms 97 so as to be vertically displaceable.

A residual tillage treatment body (not shown) is attached to a side plate at the inner end of the cover body 95 of the one working machine 74,
When the left and right working machines 74 are overhanged on the left and right portions of the machine frame 1, the residual tillage processing body plows the soil between the left and right working machines 74.
Tillage is used for residual tillage treatment.

Next, the operation of the above embodiment will be described.

The left and right lower pins 10 are connected to the left and right lower links of the tractor, the mounting shaft 8 of the top mast 7 is connected to the top link of the tractor, and the input shaft 5 is connected to the power take-out shaft of the tractor with universal joints at both ends. Connected via a power transmission shaft provided in the unit.

Next, at the time of tilling work,
The piston rod as cylinder device 36 at work <br/> movement of the cylinder device 36 the operator on board the tractor operates the operating portion of the cylinder device 36 provided on the tractor is contracted
When the piston 37 is retracted, the moving shaft 39 at the distal end of the piston rod 37 is guided and moved from the front end to the rear end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24, and this movement is performed. Rotating plate 67 in which engagement concave portion 70 is engaged with engagement shaft portion 42 of shaft 39
Are pivoted about the support shaft 69 by the engagement shaft portion.

When the rotary plate 67 is rotated, the left lock fitting 61 is pulled forward by the support shaft 68 at the outer end of the rotary plate 67 via the interlocking piece 65. The left lock member 61 is pivoted forward about the support shaft 60, and the lock portion 63 of the left lock member 61 is formed so as to protrude from the rear end of the support arm 76 of the left working machine 74. Engagement projection
The lock is released from the fitting groove 93 of the 91, and the lock of the left working machine 74 is released.

The left lock member 61 is pivoted forward, and the right lock member 61 connected to the left lock member 61 via the connecting rod 62 is supported by the support shaft 60.
And the lock portion 63 of the right lock fitting 61 is supported by the support arm 76 of the right work machine 74.
The lock is released from the fitting groove 93 of the engaging projection 91 protruding from the rear end, and the lock of the right working machine 74 is released.

Accordingly, the moving shaft 39 at the distal end of the piston rod 37 is guided and moved from the front end to the rear end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24.
The left and right lock fittings 61 are simultaneously rotated in conjunction with each other.
39 is moved to the rear end of the left-side linear moving portion 27, and the locks of the left and right working machines 74 are simultaneously released by the left and right lock fittings 61.

The moving shaft at the tip of the piston rod 37
When the 39 is moved from the front end to the rear end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24, the moving shaft 39 is displaced and rotated leftward by the moving shaft 39. Since the upper and lower interlocking plates 28 are moved along the guide long grooves 30 of the interlocking plate 28, the upper and lower interlocking plates 28 do not rotate by the moving shaft 39, and the left and right interlocking rods 32 advance and retreat with the upper and lower interlocking plates 28. Since they are not moved, the left and right working machines 74 continue to protrude to the rear of the machine frame 1. That is, the left and right working machines 74 are simultaneously unlocked prior to the operation of horizontally rotating the left and right working machines 74 forward.

Next, as the piston rod 37 retreats ,
When the 39 is moved from the rear end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24 to the arc-shaped moving portion 25, the engaging shaft portion 42 of the moving shaft 39 is engaged with the engaging concave portion 70 of the rotating plate 67. The rotating plate 67 comes into contact with and is supported by the stopper 71 by the coil spring 72, and the engaging concave portion 70 of the rotating plate 67 is opened in the same direction as the arc-shaped moving portion 25, In preparation for the engagement of the engagement shaft 42 with the engagement recess 70.

When the piston rod 37 retreats , the moving shaft 39
Is moved from the arc-shaped moving portion 25 of the upper and lower guide grooves 24 toward the right-side linear moving portion 26, the upper and lower interlocking plates 28 are moved by the moving shaft 39 from the left around the bolts of the bolts and nuts 23. Rotated to the right. Then, when the upper mounting piece 86 of the left working machine 74 is pulled by the left interlocking rod 32 pivotally attached to the upper and lower interlocking plates 28, the left working machine 74 pivots the left connecting pin 57 to the center of rotation. Is rotated horizontally toward the front.

Further, when the upper mounting piece 86 of the right working machine 74 is pushed by the right interlocking rod 32 axially mounted on the upper and lower interlocking plates 28, the right working machine 74 is moved to the right connecting pin 57. Is horizontally rotated forward with the rotation center as the rotation center.

When the piston rod 37 retreats , the moving shaft 39
Is moved to the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24, the fitting recesses 84 of the upper and lower engaging bodies 83 projecting from the support arms 76 of the left and right working machines 74. The fitting projections 12 of the upper and lower supports 11 projecting from the machine frame 1 are fitted to the other, and the other pawls attached to the inner ends of the drive shafts 78 of the left and right working machines 74. Mission 4 with clutch 79 provided on machine frame 1
Is engaged with one of the pawl clutches 19 fixed to both ends of the output shaft 6.

[0077] Left and right working machines
The right and left working machines 74 are fitted to the left and right connecting pins 57 and the upper and lower supports 11 on the left and right portions of the machine frame 1 and the respective supports 11. The upper and lower engaging members 83 of the left and right working machines 74 are connected while maintaining horizontality without moving up and down.

When the piston rod 37 is retracted , the moving shaft 39
Is moved to the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24, the engaging shaft portion 42 of the moving shaft 39 is engaged with the engaging concave portion 48 of the rotating plate 44 of the unlocking means 55. Engaged. Further, the piston rod 37 is further retracted , and the moving shaft 39 is moved up and down the guide groove.
When moved from the rear end to the front end of the linear moving portion 26 on the right side of 24, the rotating plate is rotated by the engaging shaft 42 of the moving shaft 39.
44 is rotated rightward about the support shaft 43.

Then, the left and right connecting rods 50 pivotally mounted on both sides of the rotating plate 44 are pushed forward by the rotating plate 44, and the left and right connecting rods 50 are used by the left and right connecting rods 50. 14 is the mounting shaft
It is rotated toward the lock pins 85 of the left and right working machines 74 around the rotation center 13. Then, when the moving shaft 39 having the engaging shaft portion 42 for rotating the rotating plate 44 is moved to the front end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24, the left and right lock fittings are provided.
The engagement recesses 16 of 14 are engaged with the lock pins 85 of the left and right working machines 74, respectively, and the left and right lock pins 85 and the left and right lock fittings 14 project horizontally to the left and right portions of the machine frame 1. The left and right working machines 74 are locked to the machine frame 1.

In this case, since the moving shaft 39 is moved forward along the guide long groove 30 of the upper and lower interlocking plates 28 turned rightward, the upper and lower interlocking plates 28 are further moved by the moving shaft 39. There is no rotation, and the left and right working machines 74 are not rotated by the left and right interlocking rods 32.

Therefore, the machine frame 1 is
The left and right working machines 74 are respectively displaced so as to protrude horizontally to the left and right portions, and the unlocking means 55 is interlocked with the operation of the cylinder device 36. The left and right working machines 74 protruding from the section are automatically locked. And the left and right working machines
The 74 rotary work bodies 96 are connected to the output shafts 6 of the mission 4 in an interlocking manner in a state of being driven to rotate by the output from the mission 4 of the machine frame 1.

When the machine is towed from the tractor and the input shaft 5 is rotated by the output from the power take-off shaft of the tractor, the output from the output shaft 6 of the transmission 4 causes the left and right working machines to rotate. The 74 rotary work bodies 96 are driven to rotate and are advanced, and the left and right rotary work bodies 96 are sequentially cultivated and crushed with a wide working width that is greater than the width of the tractor and protrudes in the left-right direction.

Next, when the left and right working machines are not folded for transportation from the time of working, the operator on the tractor operates the operating section of the cylinder device 36 provided on the tractor to operate the cylinder device 36 to operate the cylinder device. 36 expanded
When the piston rod 37 is advanced, the moving shaft 39 at the distal end of the piston rod 37 is guided and moved from the front end to the rear end of the right linear moving portion 26 of the upper and lower guide grooves 24. At the same time, the rotating plate 44 in which the engaging concave portion 48 is engaged with the engaging shaft portion 42 of the moving shaft 39 is interlockedly rotated about the support shaft 43 by the engaging shaft portion 42.

When the rotating plate 44 is rotated, the left and right lock fittings 14 are rotated by the rotating plate 44 via the left and right connecting rods 50.
Are towed and turned around the respective mounting shafts 13 toward the rear. Then, when the moving shaft 39 at the distal end of the piston rod 37 is moved to the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24, the right and left lock fittings 14 are engaged by the rotating plate 44. The recess 16 is disengaged from the lock pin 85 of the upper engaging body 83 of the left and right working machines 74, and the left and right working machines 74 are unlocked.

Therefore, the moving shaft 39 at the distal end of the piston rod 37 is guided and moved from the front end to the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24.
The left and right lock fittings 14 are simultaneously rotated in conjunction with each other.
39 is moved to the rear end of the right-side linear moving section 26, and the locks of the left and right working machines 74 are simultaneously released by the left and right lock fittings 14.

The moving shaft of the tip of the piston rod 37
When the 39 is moved from the front end to the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24, the moving shaft 39 is displaced and rotated rightward by the moving shaft 39. Since the upper and lower interlocking plates 28 are moved along the guide long grooves 30 of the interlocking plate 28, the upper and lower interlocking plates 28 do not rotate by the moving shaft 39, and the left and right interlocking rods 32 advance and retreat with the upper and lower interlocking plates 28. Since they are not moved, the left and right working machines 74 continue to protrude to the left and right portions of the machine frame 1. That is, the left and right working machines 74 precede the operation of horizontally rotating the left and right working machines 74 rearward.
Are unlocked at the same time.

Next, when the piston rod 37 advances , the moving shaft
When the 39 is moved from the rear end of the linear moving portion 26 on the right side of the upper and lower guide grooves 24 to the arc-shaped moving portion 25, the engaging shaft portion 42 of the moving shaft 39 is engaged with the engaging concave portion 48 of the rotary plate 44. The rotating plate 44 is brought into contact with and supported by the stopper 53 by the coil spring 54, and the engaging recess 48 of the rotating plate 44 is opened in the same direction as the arc-shaped moving portion 25, In preparation for the engagement of the engagement shaft portion 42 with the engagement concave portion 48.

Further, when the piston rod 37 advances , the moving shaft 39
Is moved from the arc-shaped moving portion 25 of the upper and lower guide grooves 24 toward the left-side linear moving portion 27, the upper and lower interlocking plates 28 are moved by the moving shaft 39 from the right side around the bolts of the bolts and nuts 23. It is turned to the left.

When the upper mounting piece 86 of the left working machine 74 is pushed by the left interlocking rod 32 pivotally mounted on the upper and lower interlocking plates 28, the left working machine 74 is connected to the left connecting machine. While being horizontally rotated rearward with the pin 57 as the center of rotation,
Each engaging body 83 of the left working machine 74 is a supporting body on the machine frame 1 side.
11 and the other pawl clutch 79 of the left working machine 74 is disengaged from the one pawl clutch 19 on the machine frame 1 side.

Further, when the upper mounting piece 86 of the right working machine 74 is pulled by the right interlocking rod 32 pivotally attached to the upper and lower interlocking plates 28, the right working machine 74 is moved to the right connecting pin. Each of the engaging members 83 of the right-side working machine 74 is rotated horizontally about the 57
And the other pawl clutch 79 of the right working machine 74 is disengaged from the one pawl clutch 19 on the machine frame 1 side.

Further, when the piston rod 37 advances , the moving shaft 39
Is moved to the rear end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24, the engaging shaft portion 42 of the moving shaft 39 is engaged with the engaging concave portion 70 of the rotating plate 67 of the unlocking means 73. The engaging projections projecting from the rear ends of the support arms 76 of the left and right working machines 74 are engaged with the guide projections 59 projecting from the rear ends of the left and right hitch arms 3 of the machine frame 1. The bodies 91 are respectively engaged and supported. Then, the left and right working machines 74 are displaced so as to project parallel to the rear portion of the machine frame 1 respectively.

When the piston rod 37 is further advanced and the moving shaft 39 is moved from the rear end to the front end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24, the moving shaft 39 is moved.
The pivot plate 67 is pivoted rearward about the support shaft 69 by the engagement shaft portion 42 of FIG.

Then, the interlocking piece 65 is pushed rearward by the rotating plate 67 via the support shaft 68, and the left lock fitting 61 is rotated by the interlocking piece 65 about the support shaft 60. It is turned toward the engagement projection 91. Also, the left lock fitting 61
Is rotated, the right lock fitting 61 connected to the left lock fitting 61 via the connecting rod 62 is rotated about the support shaft 60 toward the rear engaging projection 91.

Thus, the engaging shaft 42 for rotating the rotating plate 67
Is moved to the front end of the linear moving portion 27 on the left side of the upper and lower guide grooves 24, the lock portions 63 of the left and right lock fittings 61 engage with the support arms 76 of the left and right working machines 74. Projectile 91
Are respectively fitted in fitting grooves 93 formed in the holes. Then, the left and right working machines 74 projecting in parallel to the rear portion of the machine frame 1 by the left and right lock fittings 61 and the engaging projections 91 of the left and right working machines 74 are locked to the machine frame 1.

In this case, since the moving shaft 39 is moved forward along the guide long groove 30 of the upper and lower interlocking plates 28 turned to the left, the upper and lower interlocking plates 28 are further moved by the moving shaft 39. There is no rotation, and the left and right working machines 74 are not rotated by the left and right interlocking rods 32.

Therefore, the machine frame 1 is
The left and right working machines 74 are respectively displaced in a state protruding in parallel to the rear of the cylinder device 36, and the unlocking means 73 is interlocked with the operation of the cylinder device 36.
At 73, the left and right working machines 74 projecting parallel to the rear of the machine frame 1 are automatically locked.

The left and right working machines 74 are greatly reduced in width in the left and right direction, folded for transportation from the time of work, and transformed into a state suitable for traveling on a road or storing in a hangar.

Next, in the above embodiment, the bolt and the nut
The case where the left and right interlocking rods 32 for horizontally rotating the left and right working machines 74 are rotatably mounted on the left and right portions between the upper and lower interlocking plates 28 with the 23 bolts as the center of rotation has been described. However, the left and right working machines 74 may be horizontally rotated in the same direction about the connection pin 57 by a single interlocking rod 100 that is moved forward and backward by the interlocking plate 99.

In this case, for example, an insertion hole 23a through which the bolt of the bolt / nut 23 is inserted is inserted into one end of the interlocking plate 99.
At the other end of the interlocking plate 99, the guide long groove 30 is formed, and at the middle part of the interlocking plate 99, an up-and-down interlocking support column 101 is integrally provided.

The right working machine is attached to one end of the interlocking rod 100.
A connecting projection 87 of an upper mounting piece 86 projecting from a support arm 76 of 74 is pivotally mounted on an interlocking shaft 88 so as to be rotatable.
A connecting projection 89 of an upper mounting piece 86 protruding from the support arm 76 of the left working machine 74 is rotatably mounted on the other end of the work tool 74 by an interlocking shaft 90. Further, left and right holding pieces 102 for holding the interlocking strut 101 are integrally provided at a substantially middle portion of the interlocking rod 100 so as to project downward.

The connecting projection 87 of the right working machine 74 is provided to project rearward, and the connecting projection 89 of the left working machine 74 is provided to project forward. The interlocking rod 100 is pivotally mounted between the protrusions 87 and 89. The upper part of the interlocking column 101 of the interlocking plate 99 is interposed between the left and right holding pieces 102 of the interlocking rod 100. Other configurations are the same as those in the above-described embodiment, and thus description thereof is omitted.

With this configuration, the piston rod 37 of the cylinder device 36 advances and retreats, and the moving shaft 39 at the tip thereof is guided and guided by the guide groove 24, and moves forward and backward. Interlocking plate through the guide slot 30
99 is rotated left and right around the bolt of the bolt / nut 23.

When the interlocking rod 100 is interlocked in the left-right direction by the interlocking support 101 of the interlocking plate 99, the interlocking rod 100
The left and right working machines 74 are horizontally rotated about the respective connection pins 57, and the left and right working machines 74 are horizontally extended to the left and right portions of the machine frame 1 and the rear portion of the machine frame 1 Is displaced in a state of protruding in parallel with.

Then, the right and left working machines 74
Are displaced so as to protrude horizontally, the left and right working machines 74 are locked to the left and right portions of the machine frame 1 by the unlocking means 55 in the working state as in the above-described embodiment.
When the left and right working machines 74 are displaced to the rear of the machine frame 1 so as to protrude in a parallel manner, the left and right working machines 74 are unlocked in the non-working state in the same manner as in the previous embodiment. 73
At the rear end of the machine frame 1.

According to this embodiment, the left and right working machines 74 can be horizontally rotated by one interlocking rod 100, respectively.
One interlocking plate 99 can be moved forward and backward by one interlocking plate 99, so that the number of parts is small and the configuration is simple as compared with the above embodiment.

[0106]

According to the first aspect of the present invention, there is provided a cylinder device for displacing the left and right working machines to the left and right portions of the machine frame, respectively, and to project in parallel to the rear portion of the machine frame. The unlocking means is automatically activated in conjunction with the operation, and the left and right working machines can be securely locked by the unlocking means with the left and right working machines protruding in parallel at the rear of the machine frame. In this state, the left and right working machines can be securely held in preparation for transportation while the left and right working machines are narrowly folded for transportation.

When the left and right working machines are horizontally rotated toward the left and right portions of the machine frame, the left and right working machines are locked by the unlocking means prior to the horizontal turning of the left and right working machines. The release can be reliably performed, so that the left and right working machines can be smoothly and easily horizontally rotated toward the left and right portions of the machine frame.

Therefore, the switching operation for switching between the non-working state in which the left and right working machines are projected parallel to the rear part of the machine frame and folded and the working state in which the left and right working machines are extended to the left and right parts of the machine frame is simple, and this switching is easy. An agricultural work machine excellent in operability can be provided without requiring much trouble and labor for getting on and off the tractor for operation.

According to the second aspect of the present invention, the lock releasing means is supported by the left and right portions of the machine frame so as to be rotatable in the vertical direction, and is provided at the rear ends of the left and right working machines. A left and right lock fitting which is releasably engaged with the connecting rod, a connecting rod connecting the left and right locking fittings, and a turn which is rotatably supported by the machine frame and rotated in conjunction with the operation of the cylinder device. Since the moving plate and the interlocking piece that interlocks with the turning of the turning plate to turn the one lock fitting in the vertical direction are provided, the turning plate is turned by the cylinder device, and The left and right lock fittings can be simultaneously engaged and disengaged with respect to the engaging projections of the left and right working machines at the same time, and the left and right working machines can be locked and unlocked reliably. This configuration is also simple.

[0110] According to the invention of claim 3, the movement shaft provided to the distal end of the piston rod of the cylinder device is engaged movably engaged with the guide groove formed in the machine frame, in retreat of the piston rod The moving shaft can move smoothly along the guide groove of the machine frame, and the turning plate of the unlocking means can be surely rotated in conjunction with the moving shaft.

According to the fourth aspect of the present invention, the guide groove formed in the machine frame is moved by the moving shaft of the cylinder device to rotate the rotary plate, and the left and right lock fittings are moved through the interlocking pieces. A linear moving portion in the front-rear direction for engaging and disengaging from the engaging projection of the working machine, and a moving shaft of the cylinder device formed to communicate with the linear moving portion to move the left and right working machines horizontally via the interlocking rod. The right and left locking parts can be disengaged from the engaging projections of the left and right working machines by the linear moving part, and the right and left moving parts are moved by the linear moving part. The working machine can be rotated horizontally. Therefore, by moving the moving axis along the linear moving portion and the arc-shaped moving portion, the left and right working machines protruding in parallel to the rear portion of the machine frame are locked, the lock is released, and the left and right working machines are horizontally moved. The rotation can be performed stepwise by a series of operations, and the horizontal rotation of the left and right working machines is performed by simultaneously locking the left and right working machines, releasing this lock and horizontal rotating the left and right working machines. The hindrance can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a farm work machine showing one embodiment of the present invention.

FIG. 2 is a perspective view showing the unlocking means in the non-working state.

FIG. 3 is a side view showing an unlocked state in which a part of the same is cut away.

FIG. 4 is a side view showing a locked state in which a part is cut away.

FIG. 5 is a rear view of the same.

FIG. 6 is a plan view of the agricultural working machine.

FIG. 7 is a plan view showing lock release means before and after the work machine.

FIG. 8 is a plan view showing an interlocking mechanism of the working machine.

FIG. 9 is an exploded perspective view of the same.

FIG. 10 is a rear view showing the front and rear unlocking means;

FIG. 11 is a rear view showing the interlocking mechanism.

FIG. 12 is a side view showing an attached state of the rotary plate.

FIG. 13 is a side view showing an attached state of the interlocking rod.

FIG. 14 is an explanatory diagram showing a locked state of the working machine in the same working state.

FIG. 15 is an explanatory diagram showing an unlocked state of the working machine in the same working state.

FIG. 16 is an explanatory diagram showing an unlocked state of the working machine in the non-working state.

FIG. 17 is an explanatory view showing a locked state of the working machine in the non-working state.

FIG. 18 is an explanatory diagram showing a state in which the left and right working machines are extended right and left.

FIG. 19 is an explanatory view showing a state in which the left and right working machines are folded rearward and protruded.

FIG. 20 is a plan view of a farm working machine showing another embodiment.

FIG. 21 is a plan view of an interlocking mechanism that interlocks the interlocking rod.

FIG. 22 is a rear view with part of the same being omitted.

[Explanation of symbols]

 1 Machine frame 4 Mission 5 Input shaft 24 Guide groove 25 Arc-shaped moving part 27 Linear moving part 32 Interlocking rod 36 Cylinder device 37 Piston rod 39 Moving shaft 57 Connecting pin 61 Locking bracket 62 Connecting rod 65 Interlocking piece 67 Rotating plate 73 Lock Release means 74 Work equipment 91 Engagement projection 96 Rotary work equipment 100 Interlocking rod

Continuation of the front page (56) References Japanese Utility Model 2-12208 (JP, U) Japanese Utility Model 4-133102 (JP, U) Japanese Utility Model 4-52405 (JP, U) Japanese Utility Model 3-604 (JP) , U) Japanese Utility Model Hei 2-148215 (JP, U) Japanese Utility Model Hei 1-163907 (JP, U) Japanese Utility Model Hei 6-5401 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB A01B 73/06 A01B 33/02

Claims (4)

(57) [Claims] 1. A machine frame provided with a mission having an input shaft, and connected to the left and right portions of the machine frame so as to be rotatable in a horizontal direction by vertical connecting pins, and driven to rotate by an output from the mission. Left and right working machines having a rotary work body, and a state in which the left and right working machines are horizontally rotated about the left and right connecting pins provided on the machine frame as a center of rotation and are respectively extended to the left and right portions of the machine frame; A cylinder device for displacing the rear portion of the machine frame so as to protrude in a parallel state, wherein the left and right working machines are respectively protruded parallel to the rear portion of the machine frame by the cylinder device. When displaced, the left and right working machines are respectively locked to the rear end of the machine frame in conjunction with the operation of the cylinder device, and the cylinder device is forwardly moved toward the left and right portions of the machine frame. Agricultural machine, characterized in that a said cylinder lock releasing means for releasing each interlocking has been the lock of the left and right working machine operating the device to horizontally rotate the left and right working machine. 2. The lock release means is rotatably supported in the vertical direction on the left and right sides of the rear end of the machine frame, and is capable of engaging and disengaging with engagement projections projecting from the rear ends of the left and right working machines. Left and right lock fittings, and a connecting rod connecting the left and right lock fittings,
A rotating plate which is rotatably supported by the machine frame and which is rotated in conjunction with the operation of the cylinder device; and the one of the lock fittings is vertically rotated by the rotation of the rotating plate. The agricultural work machine according to claim 1, further comprising an interlocking piece. 3. A cylinder device has a moving shaft for rotating the rotating plate unlocking means at the distal end of the advance and retreat of the piston rod, movably The moving shaft is a guide groove formed in the machine frame The agricultural working machine according to claim 1, wherein the agricultural working machine is engaged with the agricultural work machine. 4. A guide groove formed in a machine frame is provided with a movable shaft of a cylinder device that moves to rotate a rotary plate, and locks left and right metal fittings through an interlocking piece to engage with the engaging projections of the left and right working machines. A linear moving part in the front-rear direction to be disengaged from and disengaged from the linear moving part, and a moving axis of the cylinder device formed to communicate with the linear moving part, and a left-right arc-shaped movement for horizontally rotating the left and right working machines via an interlocking rod. The agricultural working machine according to any one of claims 1 to 3, further comprising a part.